$ git clone -n https://src.fedoraproject.org/rpms/vex.git /var/lib/mock/f41-build-805811-13863/root/chroot_tmpdir/scmroot/vex
Cloning into '/var/lib/mock/f41-build-805811-13863/root/chroot_tmpdir/scmroot/vex'...
$ git fetch origin a073e9876ff30a294ed99260f20c1fd66b0e8e62:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vex
 * [new ref]         a073e9876ff30a294ed99260f20c1fd66b0e8e62 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a073e98 Rebuilt for Python 3.13