$ git clone -n https://src.fedoraproject.org/rpms/openrdate.git /var/lib/mock/f45-build-21090-578/root/chroot_tmpdir/scmroot/openrdate
Cloning into '/var/lib/mock/f45-build-21090-578/root/chroot_tmpdir/scmroot/openrdate'...
$ git fetch origin b5c64d806f0579b3779e099b0b3a4261c93a2c1c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openrdate
 * [new ref]         b5c64d806f0579b3779e099b0b3a4261c93a2c1c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b5c64d8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild