$ git clone -n https://src.fedoraproject.org/rpms/w3c-markup-validator.git /var/lib/mock/f45-build-38216-722/root/chroot_tmpdir/scmroot/w3c-markup-validator
Cloning into '/var/lib/mock/f45-build-38216-722/root/chroot_tmpdir/scmroot/w3c-markup-validator'...
$ git fetch origin 57d344cf1f399f268c8f58e1fd4d8ab3e38ffc75:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/w3c-markup-validator
 * [new ref]         57d344cf1f399f268c8f58e1fd4d8ab3e38ffc75 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57d344c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild