$ git clone -n https://src.fedoraproject.org/rpms/gpsbabel.git /var/lib/mock/f39-build-1460603-33218/root/chroot_tmpdir/scmroot/gpsbabel
Cloning into '/var/lib/mock/f39-build-1460603-33218/root/chroot_tmpdir/scmroot/gpsbabel'...
$ git fetch origin 1a84468a7467195a5915bed3e9a821b7809307c2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gpsbabel
 * [new ref]         1a84468a7467195a5915bed3e9a821b7809307c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a84468 Add -DGPSBABEL_WITH_LIBUSB=pkgconfig.