$ git clone -n https://src.fedoraproject.org/rpms/rust-gethostname0.2.git /var/lib/mock/f38-build-side-42-init-devel-1406904-31263/root/chroot_tmpdir/scmroot/rust-gethostname0.2
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1406904-31263/root/chroot_tmpdir/scmroot/rust-gethostname0.2'...
$ git fetch origin 63cf88299f7e82094ed27d94553c59db7ab7f3df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gethostname0.2
 * [new ref]         63cf88299f7e82094ed27d94553c59db7ab7f3df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63cf882 Initial import (gethostname 0.2 compat package)