$ git clone -n https://src.fedoraproject.org/rpms/rust-libgit2-sys0.13.git /var/lib/mock/f40-build-2092805-50289/root/chroot_tmpdir/scmroot/rust-libgit2-sys0.13
Cloning into '/var/lib/mock/f40-build-2092805-50289/root/chroot_tmpdir/scmroot/rust-libgit2-sys0.13'...
$ git fetch origin 457cf3f1858fff9ae1c10c91ead697e4078be5ea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libgit2-sys0.13
 * [new ref]         457cf3f1858fff9ae1c10c91ead697e4078be5ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 457cf3f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild