$ git clone -n https://src.fedoraproject.org/rpms/vxl.git /var/lib/mock/f40-build-2216650-52503/root/chroot_tmpdir/scmroot/vxl
Cloning into '/var/lib/mock/f40-build-2216650-52503/root/chroot_tmpdir/scmroot/vxl'...
$ git fetch origin 1f24f8bc47645555fc19adc79bd45d32f580ea7d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vxl
 * [new ref]         1f24f8bc47645555fc19adc79bd45d32f580ea7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1f24f8b Rebuilt for minizip-ng transition Fedora change