$ git clone -n https://src.fedoraproject.org/rpms/postgresql15.git /var/lib/mock/f41-build-851078-165854/root/chroot_tmpdir/scmroot/postgresql15
Cloning into '/var/lib/mock/f41-build-851078-165854/root/chroot_tmpdir/scmroot/postgresql15'...
$ git fetch origin c9dedede4fbd24d5023a19e7f947bf02826fa4fb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/postgresql15
 * [new ref]         c9dedede4fbd24d5023a19e7f947bf02826fa4fb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c9deded Update to 15.8, remove libXML patch