$ git clone -n https://src.fedoraproject.org/rpms/dehydrated.git /var/lib/mock/f45-build-7409-363/root/chroot_tmpdir/scmroot/dehydrated
Cloning into '/var/lib/mock/f45-build-7409-363/root/chroot_tmpdir/scmroot/dehydrated'...
$ git fetch origin ce687072c11a16bda2b9c430829312a6376d6bd6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dehydrated
 * [new ref]         ce687072c11a16bda2b9c430829312a6376d6bd6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ce68707 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild