$ git clone -n https://src.fedoraproject.org/rpms/ghc-select-rpms.git /var/lib/mock/f42-build-878427-180629/root/chroot_tmpdir/scmroot/ghc-select-rpms
Cloning into '/var/lib/mock/f42-build-878427-180629/root/chroot_tmpdir/scmroot/ghc-select-rpms'...
$ git fetch origin 09004d4c8cbb53822bf4778789848bf31c9696a0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-select-rpms
 * [new ref]         09004d4c8cbb53822bf4778789848bf31c9696a0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 09004d4 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild