$ git clone -n https://src.fedoraproject.org/rpms/ghc-mountpoints.git /var/lib/mock/f38-build-side-42-init-devel-908516-28677/root/chroot_tmpdir/scmroot/ghc-mountpoints
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-908516-28677/root/chroot_tmpdir/scmroot/ghc-mountpoints'...
$ git fetch origin 9d87abe00375dbb56796293a4ab380cf4e43d213:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-mountpoints
 * [new ref]         9d87abe00375dbb56796293a4ab380cf4e43d213 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d87abe Convert to %autorelease and %autochangelog