$ git clone -n https://src.fedoraproject.org/rpms/libformfactor.git /var/lib/mock/f45-build-16183-483/root/chroot_tmpdir/scmroot/libformfactor
Cloning into '/var/lib/mock/f45-build-16183-483/root/chroot_tmpdir/scmroot/libformfactor'...
$ git fetch origin 76288b4542d251945d38ab221f47acc47d7422b7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libformfactor
 * [new ref]         76288b4542d251945d38ab221f47acc47d7422b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 76288b4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild