$ git clone -n https://src.fedoraproject.org/rpms/golang-github-kardianos-osext.git /var/lib/mock/f45-build-12138-439/root/chroot_tmpdir/scmroot/golang-github-kardianos-osext
Cloning into '/var/lib/mock/f45-build-12138-439/root/chroot_tmpdir/scmroot/golang-github-kardianos-osext'...
$ git fetch origin a0ad81900fbaa2c3ff37d08c9ad2fdb60d2c909f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-kardianos-osext
 * [new ref]         a0ad81900fbaa2c3ff37d08c9ad2fdb60d2c909f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a0ad819 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild