$ git clone -n https://src.fedoraproject.org/rpms/rust-serial_test.git /var/lib/mock/f40-build-2101714-50516/root/chroot_tmpdir/scmroot/rust-serial_test
Cloning into '/var/lib/mock/f40-build-2101714-50516/root/chroot_tmpdir/scmroot/rust-serial_test'...
$ git fetch origin fa7c793e4a7b1e16a64da542a134c5cafecb5f4d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-serial_test
 * [new ref]         fa7c793e4a7b1e16a64da542a134c5cafecb5f4d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa7c793 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild