$ git clone -n https://src.fedoraproject.org/rpms/cups-pdf.git /var/lib/mock/f40-build-795285-140106/root/chroot_tmpdir/scmroot/cups-pdf
Cloning into '/var/lib/mock/f40-build-795285-140106/root/chroot_tmpdir/scmroot/cups-pdf'...
$ git fetch origin b15f8b658ab805ecb7769f23362f6ac8c78a5bad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cups-pdf
 * [new ref]         b15f8b658ab805ecb7769f23362f6ac8c78a5bad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b15f8b6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild