$ git clone -n https://src.fedoraproject.org/rpms/rust-fs2.git /var/lib/mock/f40-build-2036436-48030/root/chroot_tmpdir/scmroot/rust-fs2
Cloning into '/var/lib/mock/f40-build-2036436-48030/root/chroot_tmpdir/scmroot/rust-fs2'...
$ git fetch origin d4e1a15783603654f3466b4c803d608cf60f0ff7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-fs2
 * [new ref]         d4e1a15783603654f3466b4c803d608cf60f0ff7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4e1a15 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild