$ git clone -n https://src.fedoraproject.org/rpms/perl-WebService-Rajce.git /var/lib/mock/f45-build-27435-624/root/chroot_tmpdir/scmroot/perl-WebService-Rajce
Cloning into '/var/lib/mock/f45-build-27435-624/root/chroot_tmpdir/scmroot/perl-WebService-Rajce'...
$ git fetch origin 4e81428c580d07000bbaff173a2ba48ea3b5ced4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-WebService-Rajce
 * [new ref]         4e81428c580d07000bbaff173a2ba48ea3b5ced4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4e81428 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild