$ git clone -n https://src.fedoraproject.org/rpms/tomcat-native.git /var/lib/mock/f40-build-1936925-25146/root/chroot_tmpdir/scmroot/tomcat-native
Cloning into '/var/lib/mock/f40-build-1936925-25146/root/chroot_tmpdir/scmroot/tomcat-native'...
$ git fetch origin 62c374ec775af6c5b3f221282ad0ad34adf20f0e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tomcat-native
 * [new ref]         62c374ec775af6c5b3f221282ad0ad34adf20f0e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62c374e Merge branch 'rawhide' into f40