$ git clone -n https://src.fedoraproject.org/rpms/lolcat.git /var/lib/mock/f45-build-17570-501/root/chroot_tmpdir/scmroot/lolcat
Cloning into '/var/lib/mock/f45-build-17570-501/root/chroot_tmpdir/scmroot/lolcat'...
$ git fetch origin df2d886c4686b9d36fb2ffbf583342e20009cdbd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lolcat
 * [new ref]         df2d886c4686b9d36fb2ffbf583342e20009cdbd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at df2d886 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild