$ git clone -n https://src.fedoraproject.org/rpms/vxl.git /var/lib/mock/f39-build-1470261-33886/root/chroot_tmpdir/scmroot/vxl
Cloning into '/var/lib/mock/f39-build-1470261-33886/root/chroot_tmpdir/scmroot/vxl'...
$ git fetch origin 869139c1f028a3a957a94b1f55c0c6bb1f1b5aa2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vxl
 * [new ref]         869139c1f028a3a957a94b1f55c0c6bb1f1b5aa2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 869139c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild