$ git clone -n https://src.fedoraproject.org/rpms/ypserv.git /var/lib/mock/f45-build-39271-733/root/chroot_tmpdir/scmroot/ypserv
Cloning into '/var/lib/mock/f45-build-39271-733/root/chroot_tmpdir/scmroot/ypserv'...
$ git fetch origin e3345a26ed78aea66fbdd634afe7bf11642a2aa0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ypserv
 * [new ref]         e3345a26ed78aea66fbdd634afe7bf11642a2aa0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3345a2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild