$ git clone -n https://src.fedoraproject.org/rpms/rust-indoc.git /var/lib/mock/f45-build-42549-794/root/chroot_tmpdir/scmroot/rust-indoc
Cloning into '/var/lib/mock/f45-build-42549-794/root/chroot_tmpdir/scmroot/rust-indoc'...
$ git fetch origin a71f0290f34ed44f096ab979ac62d3dcfb636f20:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-indoc
 * [new ref]         a71f0290f34ed44f096ab979ac62d3dcfb636f20 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a71f029 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild