$ git clone -n https://src.fedoraproject.org/rpms/act.git /var/lib/mock/f40-build-1990361-43409/root/chroot_tmpdir/scmroot/act
Cloning into '/var/lib/mock/f40-build-1990361-43409/root/chroot_tmpdir/scmroot/act'...
$ git fetch origin 241900053a65d461013fd27d3d1fc4d1a3ee5bf1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/act
 * [new ref]         241900053a65d461013fd27d3d1fc4d1a3ee5bf1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2419000 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild