$ git clone -n https://src.fedoraproject.org/rpms/rust-alacritty.git /var/lib/mock/f40-build-804190-144463/root/chroot_tmpdir/scmroot/rust-alacritty
Cloning into '/var/lib/mock/f40-build-804190-144463/root/chroot_tmpdir/scmroot/rust-alacritty'...
$ git fetch origin 333079b04afccbb6017e473a55d249dd57214b8b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-alacritty
 * [new ref]         333079b04afccbb6017e473a55d249dd57214b8b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 333079b Update to 0.13.2 (rhbz#2271308)