$ git clone -n https://src.fedoraproject.org/rpms/rss2email.git /var/lib/mock/f39-build-1490221-34505/root/chroot_tmpdir/scmroot/rss2email
Cloning into '/var/lib/mock/f39-build-1490221-34505/root/chroot_tmpdir/scmroot/rss2email'...
$ git fetch origin 2605fc99225875d62790b80ae6b0d6fca5a4a9d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rss2email
 * [new ref]         2605fc99225875d62790b80ae6b0d6fca5a4a9d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2605fc9 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild