$ git clone -n https://src.fedoraproject.org/rpms/kbackup.git /var/lib/mock/f42-build-side-1-3502896-45979/root/chroot_tmpdir/scmroot/kbackup
Cloning into '/var/lib/mock/f42-build-side-1-3502896-45979/root/chroot_tmpdir/scmroot/kbackup'...
$ git fetch origin 70dfd65c1056faa3a38384ed0f8682dc367ab7a1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kbackup
 * [new ref]         70dfd65c1056faa3a38384ed0f8682dc367ab7a1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 70dfd65 25.04.0