$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode_categories.git /var/lib/mock/f45-build-45939-829/root/chroot_tmpdir/scmroot/rust-unicode_categories
Cloning into '/var/lib/mock/f45-build-45939-829/root/chroot_tmpdir/scmroot/rust-unicode_categories'...
$ git fetch origin 58bbff40bdfb525bdfafeac33320698d08fccdd4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode_categories
 * [new ref]         58bbff40bdfb525bdfafeac33320698d08fccdd4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58bbff4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild