$ git clone -n https://src.fedoraproject.org/rpms/libXcomposite.git /var/lib/mock/f40-build-785483-133957/root/chroot_tmpdir/scmroot/libXcomposite
Cloning into '/var/lib/mock/f40-build-785483-133957/root/chroot_tmpdir/scmroot/libXcomposite'...
$ git fetch origin 6523522cb3a1ee3606292b9fbf806157cfffe200:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libXcomposite
 * [new ref]         6523522cb3a1ee3606292b9fbf806157cfffe200 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6523522 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild