$ git clone -n https://src.fedoraproject.org/rpms/tuba.git /var/lib/mock/f42-build-862677-171015/root/chroot_tmpdir/scmroot/tuba
Cloning into '/var/lib/mock/f42-build-862677-171015/root/chroot_tmpdir/scmroot/tuba'...
$ git fetch origin 05b9d2620890a92c0ba423f7aa1aab2b6e6d19e6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tuba
 * [new ref]         05b9d2620890a92c0ba423f7aa1aab2b6e6d19e6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 05b9d26 Rebuild for ICU 76