$ git clone -n https://src.fedoraproject.org/rpms/hugs98.git /var/lib/mock/f45-build-13561-453/root/chroot_tmpdir/scmroot/hugs98
Cloning into '/var/lib/mock/f45-build-13561-453/root/chroot_tmpdir/scmroot/hugs98'...
$ git fetch origin 2f107a347f7407f2669bbf0bf6bc9f045b3dcfd6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hugs98
 * [new ref]         2f107a347f7407f2669bbf0bf6bc9f045b3dcfd6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f107a3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild