$ git clone -n https://src.fedoraproject.org/rpms/rust-comrak.git /var/lib/mock/f40-build-1612203-24071/root/chroot_tmpdir/scmroot/rust-comrak
Cloning into '/var/lib/mock/f40-build-1612203-24071/root/chroot_tmpdir/scmroot/rust-comrak'...
$ git fetch origin 993477f9f3227f871bea1ac8fd23cb36d757981b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-comrak
 * [new ref]         993477f9f3227f871bea1ac8fd23cb36d757981b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 993477f Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces