$ git clone -n https://src.fedoraproject.org/rpms/fasterxml-oss-parent.git /var/lib/mock/f39-build-1568504-37648/root/chroot_tmpdir/scmroot/fasterxml-oss-parent
Cloning into '/var/lib/mock/f39-build-1568504-37648/root/chroot_tmpdir/scmroot/fasterxml-oss-parent'...
$ git fetch origin c44c063ae79b703ecc5d9281dc9603cbd48135a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fasterxml-oss-parent
 * [new ref]         c44c063ae79b703ecc5d9281dc9603cbd48135a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c44c063 [packit] 55 upstream release