$ git clone -n https://src.fedoraproject.org/rpms/gcl.git /var/lib/mock/f31-build-92981-32390/root/chroot_tmpdir/scmroot/gcl
Cloning into '/var/lib/mock/f31-build-92981-32390/root/chroot_tmpdir/scmroot/gcl'...
$ git reset --hard 4c1f099fa6470bcb69c8c4697ca2e908fbabf9b5
Checking out files:  92% (117/127)   
Checking out files:  93% (119/127)   
Checking out files:  94% (120/127)   
Checking out files:  95% (121/127)   
Checking out files:  96% (122/127)   
Checking out files:  97% (124/127)   
Checking out files:  98% (125/127)   
Checking out files:  99% (126/127)   
Checking out files: 100% (127/127)   
Checking out files: 100% (127/127), done.
HEAD is now at 4c1f099 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild