$ git clone -n https://src.fedoraproject.org/rpms/rust-serde_yaml0.8.git /var/lib/mock/f39-build-1488965-34501/root/chroot_tmpdir/scmroot/rust-serde_yaml0.8
Cloning into '/var/lib/mock/f39-build-1488965-34501/root/chroot_tmpdir/scmroot/rust-serde_yaml0.8'...
$ git fetch origin 4208f649e9bad54616cb9a2f18766791a76fef40:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-serde_yaml0.8
 * [new ref]         4208f649e9bad54616cb9a2f18766791a76fef40 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4208f64 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild