Libre Office Installation Error

Hey Team,
I started my libre office set up by following the steps given at official site.
After installing all the dependencies, I executed this step...

$ git clone git://anongit.freedesktop.org/libreoffice/core libreoffice

But I am receiving this error:
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fatal: read error: Connection reset by peer1.12 GiB | 233.00 KiB/s
fatal: early EOF
fatal: index-pack failed
**********************************************************************
Then I tried this:
git clone https://gerrit.libreoffice.org/core libreoffice

Again I received same kind of error:
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error: RPC failed; curl 56 GnuTLS recv error (-9): A TLS packet with
unexpected length was received.
fatal: the remote end hung up unexpectedly
fatal: early EOF
fatal: index-pack failed
***********************************************************************************
I tried troubleshooting this: I followed the steps given on this:
https://devopscube.com/gnutls-handshake-failed-aws-codecommit/
But at the end I am receiving this error:
*******************************************************************
dpkg: dependency problems prevent configuration of git:
 git depends on git-man (<< 1:2.7.4-.); however:
  Version of git-man on system is 1:2.20.1-0ppa1~ubuntu16.04.1.

dpkg: error processing package git (--install):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 git
***********************************************************************

After all this I tried cloning the repository directly from
github(libreoffice/core repository):
In this, after successful execution of ./autogen.sh, make command
gives errors:
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This is what I get on terminal-
komal@komal-Vostro-15-3568:~/core-master$ /usr/bin/make
/bin/sh: 1: .: Can't open /home/komal/core-master/sources.ver
Makefile:250: *** Error while retrieving $lo_sources_ver from
/home/komal/core-master/sources.ver.  Stop.
********************************************************************************

I would be really very grateful, if I could get help in this. I am
totally stuck. I have tried lot many ways but couldn't resolve the
errors.
Sorry, for creating this nuissance. But I really need help!

Thank you Team in anticipation!

Regards,
Komal