$ git clone -n https://src.fedoraproject.org/rpms/frog-protocols.git /var/lib/mock/f45-build-9289-401/root/chroot_tmpdir/scmroot/frog-protocols
Cloning into '/var/lib/mock/f45-build-9289-401/root/chroot_tmpdir/scmroot/frog-protocols'...
$ git fetch origin c26dd674e09bbcc9301b78bec356f1bf32476bfd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/frog-protocols
 * [new ref]         c26dd674e09bbcc9301b78bec356f1bf32476bfd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c26dd67 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild