$ git clone -n https://src.fedoraproject.org/rpms/wimlib.git /var/lib/mock/f39-build-1459967-33173/root/chroot_tmpdir/scmroot/wimlib
Cloning into '/var/lib/mock/f39-build-1459967-33173/root/chroot_tmpdir/scmroot/wimlib'...
$ git fetch origin e0ededf5eb1602007fb4e8c72ce17d4f25224fa9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wimlib
 * [new ref]         e0ededf5eb1602007fb4e8c72ce17d4f25224fa9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e0ededf Update to 1.14.3