$ git clone -n https://src.fedoraproject.org/rpms/rust-claims.git /var/lib/mock/f45-build-40796-776/root/chroot_tmpdir/scmroot/rust-claims
Cloning into '/var/lib/mock/f45-build-40796-776/root/chroot_tmpdir/scmroot/rust-claims'...
$ git fetch origin c182bc1b11d36b19f1508a073fefbf8b3cc2649d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-claims
 * [new ref]         c182bc1b11d36b19f1508a073fefbf8b3cc2649d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c182bc1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild