$ git clone -n https://src.fedoraproject.org/rpms/kmodtool.git /var/lib/mock/f45-build-15282-472/root/chroot_tmpdir/scmroot/kmodtool
Cloning into '/var/lib/mock/f45-build-15282-472/root/chroot_tmpdir/scmroot/kmodtool'...
$ git fetch origin 6740db9934a2508447dc1c41d295cab00e8f3ddf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kmodtool
 * [new ref]         6740db9934a2508447dc1c41d295cab00e8f3ddf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6740db9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild