$ git clone -n https://src.fedoraproject.org/rpms/powermanga.git /var/lib/mock/f45-build-28864-633/root/chroot_tmpdir/scmroot/powermanga
Cloning into '/var/lib/mock/f45-build-28864-633/root/chroot_tmpdir/scmroot/powermanga'...
$ git fetch origin fa67b3b9c9e195723a2839cb521e0358443c6b43:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/powermanga
 * [new ref]         fa67b3b9c9e195723a2839cb521e0358443c6b43 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa67b3b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild