$ git clone -n https://src.fedoraproject.org/rpms/rust-unindent.git /var/lib/mock/f45-build-45937-829/root/chroot_tmpdir/scmroot/rust-unindent
Cloning into '/var/lib/mock/f45-build-45937-829/root/chroot_tmpdir/scmroot/rust-unindent'...
$ git fetch origin e759e0ca5f16e77906ce8b03b2b28873809b1ae2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unindent
 * [new ref]         e759e0ca5f16e77906ce8b03b2b28873809b1ae2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e759e0c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild