$ git clone -n https://src.fedoraproject.org/rpms/perl-Beanstalk-Client.git /var/lib/mock/f45-build-21879-588/root/chroot_tmpdir/scmroot/perl-Beanstalk-Client
Cloning into '/var/lib/mock/f45-build-21879-588/root/chroot_tmpdir/scmroot/perl-Beanstalk-Client'...
$ git fetch origin 217e23cbdc0f95d06557f96cee81a1560b1a39d2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Beanstalk-Client
 * [new ref]         217e23cbdc0f95d06557f96cee81a1560b1a39d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 217e23c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild