$ git clone -n https://src.fedoraproject.org/rpms/libcmis.git /var/lib/mock/f40-build-2227779-53040/root/chroot_tmpdir/scmroot/libcmis
Cloning into '/var/lib/mock/f40-build-2227779-53040/root/chroot_tmpdir/scmroot/libcmis'...
$ git fetch origin 91d468ccd8a3f534a4d99e6681e671879ff9a482:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcmis
 * [new ref]         91d468ccd8a3f534a4d99e6681e671879ff9a482 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91d468c Fix building against libxml2 2.12.0 and above