$ git clone -n https://src.fedoraproject.org/rpms/rust-gtk4-macros0.8.git /var/lib/mock/f42-build-side-1-3497642-45961/root/chroot_tmpdir/scmroot/rust-gtk4-macros0.8
Cloning into '/var/lib/mock/f42-build-side-1-3497642-45961/root/chroot_tmpdir/scmroot/rust-gtk4-macros0.8'...
$ git fetch origin 8c8714b3b91950373a3b4e8f66e65220e0356b87:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gtk4-macros0.8
 * [new ref]         8c8714b3b91950373a3b4e8f66e65220e0356b87 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c8714b compat package no longer needed