$ git clone -n https://src.fedoraproject.org/rpms/fedora-chromium-config.git /var/lib/mock/f39-build-1461638-33273/root/chroot_tmpdir/scmroot/fedora-chromium-config
Cloning into '/var/lib/mock/f39-build-1461638-33273/root/chroot_tmpdir/scmroot/fedora-chromium-config'...
$ git fetch origin 779620e77e2a5fd96efc325dab014d750c886bde:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fedora-chromium-config
 * [new ref]         779620e77e2a5fd96efc325dab014d750c886bde -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 779620e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild