$ git clone -n https://src.fedoraproject.org/rpms/kf5-kdoctools.git /var/lib/mock/f45-build-14829-464/root/chroot_tmpdir/scmroot/kf5-kdoctools
Cloning into '/var/lib/mock/f45-build-14829-464/root/chroot_tmpdir/scmroot/kf5-kdoctools'...
$ git fetch origin b105d354c7fd676c2ec3669771c72843e17f1861:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kdoctools
 * [new ref]         b105d354c7fd676c2ec3669771c72843e17f1861 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b105d35 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild