$ git clone -n https://src.fedoraproject.org/rpms/gnome-maps.git /var/lib/mock/f40-build-2066678-49285/root/chroot_tmpdir/scmroot/gnome-maps
Cloning into '/var/lib/mock/f40-build-2066678-49285/root/chroot_tmpdir/scmroot/gnome-maps'...
$ git fetch origin 190b7d8e87db410420c6c74edd4d3a3c6ba13eaa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-maps
 * [new ref]         190b7d8e87db410420c6c74edd4d3a3c6ba13eaa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 190b7d8 Update to 45.2