$ git clone -n https://src.fedoraproject.org/rpms/kchildlock.git /var/lib/mock/f31-build-103152-33604/root/thebuilddir/tmp/scmroot/kchildlock
Cloning into '/var/lib/mock/f31-build-103152-33604/root/thebuilddir/tmp/scmroot/kchildlock'...
$ git reset --hard 9c57705f65ff93a3eb91ee838ed4dd7ff3a1f573
HEAD is now at 9c57705 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild