$ git clone -n https://src.fedoraproject.org/rpms/python-gitapi.git /var/lib/mock/f45-build-30863-648/root/chroot_tmpdir/scmroot/python-gitapi
Cloning into '/var/lib/mock/f45-build-30863-648/root/chroot_tmpdir/scmroot/python-gitapi'...
$ git fetch origin 1cff0d7b18734c03f640daf04e68c69dce97df44:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-gitapi
 * [new ref]         1cff0d7b18734c03f640daf04e68c69dce97df44 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1cff0d7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild