$ git clone -n https://src.fedoraproject.org/rpms/selenium-manager.git /var/lib/mock/f45-build-46402-834/root/chroot_tmpdir/scmroot/selenium-manager
Cloning into '/var/lib/mock/f45-build-46402-834/root/chroot_tmpdir/scmroot/selenium-manager'...
$ git fetch origin 21218a38b14036f132e42c8a686e5c37bafa86a0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/selenium-manager
 * [new ref]         21218a38b14036f132e42c8a686e5c37bafa86a0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21218a3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild