$ git clone -n https://src.fedoraproject.org/forks/hypersa/rpms/ghc-GLURaw.git /var/lib/mock/f39-build-2227530-53024/root/chroot_tmpdir/scmroot/ghc-GLURaw
Cloning into '/var/lib/mock/f39-build-2227530-53024/root/chroot_tmpdir/scmroot/ghc-GLURaw'...
$ git fetch origin 5cdd3cbbf5d463aafea6761db865eeb1743cf660:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/forks/hypersa/rpms/ghc-GLURaw
 * [new ref]         5cdd3cbbf5d463aafea6761db865eeb1743cf660 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5cdd3cb rv64 rebuild