$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-mailmap.git /var/lib/mock/f38-build-side-42-init-devel-1085682-30003/root/chroot_tmpdir/scmroot/rust-gix-mailmap
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1085682-30003/root/chroot_tmpdir/scmroot/rust-gix-mailmap'...
$ git fetch origin 5257a46aac0af1d3be36e308560c764426798211:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-mailmap
 * [new ref]         5257a46aac0af1d3be36e308560c764426798211 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5257a46 Initial import (#2228512)