$ git clone -n https://src.fedoraproject.org/rpms/rust-alacritty_terminal.git /var/lib/mock/f40-build-2727162-73126/root/chroot_tmpdir/scmroot/rust-alacritty_terminal
Cloning into '/var/lib/mock/f40-build-2727162-73126/root/chroot_tmpdir/scmroot/rust-alacritty_terminal'...
$ git fetch origin a704e47991ff544e8cc3c4c4fab5772c9637204b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-alacritty_terminal
 * [new ref]         a704e47991ff544e8cc3c4c4fab5772c9637204b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a704e47 Update to 0.23.0 (rhbz#2262832)