$ git clone -n https://src.fedoraproject.org/rpms/ghc-X11.git /var/lib/mock/f42-build-877441-180226/root/chroot_tmpdir/scmroot/ghc-X11
Cloning into '/var/lib/mock/f42-build-877441-180226/root/chroot_tmpdir/scmroot/ghc-X11'...
$ git fetch origin 6468d5a222eba5c3ce714b67e2f582895de9500d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-X11
 * [new ref]         6468d5a222eba5c3ce714b67e2f582895de9500d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6468d5a Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild