$ git clone -n https://src.fedoraproject.org/rpms/mediainfo.git /var/lib/mock/f38-build-side-42-init-devel-1130092-30310/root/chroot_tmpdir/scmroot/mediainfo
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1130092-30310/root/chroot_tmpdir/scmroot/mediainfo'...
$ git fetch origin b45b246462f5962825a70ac4c57267f86acc90a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mediainfo
 * [new ref]         b45b246462f5962825a70ac4c57267f86acc90a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b45b246 Update to 23.03.