$ git clone -n https://src.fedoraproject.org/rpms/ghc9.8.git /var/lib/mock/f41-build-side-1-3126833-39527/root/chroot_tmpdir/scmroot/ghc9.8
Cloning into '/var/lib/mock/f41-build-side-1-3126833-39527/root/chroot_tmpdir/scmroot/ghc9.8'...
$ git fetch origin 7fa1b6d026aab683bc84171ba4a8c405e7d47405:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc9.8
 * [new ref]         7fa1b6d026aab683bc84171ba4a8c405e7d47405 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7fa1b6d use ld.bfd