$ git clone -n https://src.fedoraproject.org/rpms/libyang.git /var/lib/mock/f38-build-side-42-init-devel-780290-27892/root/chroot_tmpdir/scmroot/libyang
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-780290-27892/root/chroot_tmpdir/scmroot/libyang'...
$ git fetch origin 527a6024328a459cb748e5527b386e64b827cf14:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libyang
 * [new ref]         527a6024328a459cb748e5527b386e64b827cf14 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 527a602 Rebase to version 2.1.55