$ git clone -n https://src.fedoraproject.org/rpms/rust-alacritty_terminal.git /var/lib/mock/f45-build-40032-767/root/chroot_tmpdir/scmroot/rust-alacritty_terminal
Cloning into '/var/lib/mock/f45-build-40032-767/root/chroot_tmpdir/scmroot/rust-alacritty_terminal'...
$ git fetch origin a50161af50ab3349607e4e18b7341b87266f310e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-alacritty_terminal
 * [new ref]         a50161af50ab3349607e4e18b7341b87266f310e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a50161a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild