$ git clone -n https://src.fedoraproject.org/rpms/rust-quad-url.git /var/lib/mock/f45-build-44204-811/root/chroot_tmpdir/scmroot/rust-quad-url
Cloning into '/var/lib/mock/f45-build-44204-811/root/chroot_tmpdir/scmroot/rust-quad-url'...
$ git fetch origin c45ff27d717e5c04b9c2a587532500ecb95cd7e8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-quad-url
 * [new ref]         c45ff27d717e5c04b9c2a587532500ecb95cd7e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c45ff27 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild