$ git clone -n https://src.fedoraproject.org/rpms/ghc-mountpoints.git /var/lib/mock/f45-build-10555-418/root/chroot_tmpdir/scmroot/ghc-mountpoints
Cloning into '/var/lib/mock/f45-build-10555-418/root/chroot_tmpdir/scmroot/ghc-mountpoints'...
$ git fetch origin 8c8a55c59066a65111500ef17c4130af7430ef50:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-mountpoints
 * [new ref]         8c8a55c59066a65111500ef17c4130af7430ef50 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c8a55c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild