$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode-general-category.git /var/lib/mock/f45-build-45905-829/root/chroot_tmpdir/scmroot/rust-unicode-general-category
Cloning into '/var/lib/mock/f45-build-45905-829/root/chroot_tmpdir/scmroot/rust-unicode-general-category'...
$ git fetch origin d60e41fb386b3d3d4179e18ec7fdb24726ae70fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode-general-category
 * [new ref]         d60e41fb386b3d3d4179e18ec7fdb24726ae70fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d60e41f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild