$ git clone -n https://src.fedoraproject.org/rpms/xml-commons-resolver.git /var/lib/mock/f41-build-side-1-3135086-39766/root/chroot_tmpdir/scmroot/xml-commons-resolver
Cloning into '/var/lib/mock/f41-build-side-1-3135086-39766/root/chroot_tmpdir/scmroot/xml-commons-resolver'...
$ git fetch origin 74e65f8161c495672d8442a007d862125c3a046b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xml-commons-resolver
 * [new ref]         74e65f8161c495672d8442a007d862125c3a046b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74e65f8 Switch javapackages tests to f41 branch