$ git clone -n https://src.fedoraproject.org/rpms/perl-POE-Component-Child.git /var/lib/mock/f41-build-1107965-20090/root/chroot_tmpdir/scmroot/perl-POE-Component-Child
Cloning into '/var/lib/mock/f41-build-1107965-20090/root/chroot_tmpdir/scmroot/perl-POE-Component-Child'...
$ git fetch origin ce0e00c84af459cfb1e30b558fb6310c30bcd7e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-POE-Component-Child
 * [new ref]         ce0e00c84af459cfb1e30b558fb6310c30bcd7e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ce0e00c Eliminate use of obsolete %patchN syntax (#2283636)