$ git clone -n https://src.fedoraproject.org/rpms/rust-onig_sys.git /var/lib/mock/f39-build-1657437-40565/root/chroot_tmpdir/scmroot/rust-onig_sys
Cloning into '/var/lib/mock/f39-build-1657437-40565/root/chroot_tmpdir/scmroot/rust-onig_sys'...
$ git fetch origin 31f9cc91e650da9967c0935e932656af1783b71e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-onig_sys
 * [new ref]         31f9cc91e650da9967c0935e932656af1783b71e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 31f9cc9 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild