$ git clone -n https://src.fedoraproject.org/rpms/step.git /var/lib/mock/f41-build-side-1-2949518-35473/root/chroot_tmpdir/scmroot/step
Cloning into '/var/lib/mock/f41-build-side-1-2949518-35473/root/chroot_tmpdir/scmroot/step'...
$ git fetch origin 3e16a2d406c19c3db095fd20be17cd08949e5429:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/step
 * [new ref]         3e16a2d406c19c3db095fd20be17cd08949e5429 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e16a2d 24.08.2