$ git clone -n https://src.fedoraproject.org/rpms/rust-alacritty.git /var/lib/mock/f40-build-1883002-25042/root/chroot_tmpdir/scmroot/rust-alacritty
Cloning into '/var/lib/mock/f40-build-1883002-25042/root/chroot_tmpdir/scmroot/rust-alacritty'...
$ git fetch origin 2d978abb2185327b2f2f914c8e69fc72a1b5f878:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-alacritty
 * [new ref]         2d978abb2185327b2f2f914c8e69fc72a1b5f878 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d978ab Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces