$ git clone -n https://src.fedoraproject.org/rpms/decentxml.git /var/lib/mock/f42-build-3528298-46309/root/chroot_tmpdir/scmroot/decentxml
Cloning into '/var/lib/mock/f42-build-3528298-46309/root/chroot_tmpdir/scmroot/decentxml'...
$ git fetch origin 91f3921cd57016d3c84765e6505b2cabc3d8950a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/decentxml
 * [new ref]         91f3921cd57016d3c84765e6505b2cabc3d8950a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91f3921 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild